PCM1742EG4

24位192 kHz采样，增强型多级Δ-Σ ，音频数位类比转换器 24-Bit, 192-kHz Sampling, Enhanced Multilevel, Delta-Sigma, Audio Digital-to-Analog Converter

DESCRIPON

The PCM1742 is a CMOS, monolithic, integrated circuit which includes stereo digital-to-analog converters DACs and support circuitry in a small SSOP-16 package. The data converters use Texas Instruments" enhanced multilevel delta-sigma archi-tecture that employs fourth-order noise shaping and 8-level amplitude quantization to achieve excellent dynamic performance and improved tolerance to clock jitter.

FEATURES

• 24-Bit Resolution

• Analog Performance VCC = 5 V:

– Dynamic Range:

  • 106 dB, Typical PCM1742KE

  • 100 dB, Typical PCM1742E

– SNR:

  • 106 dB, Typical PCM1742KE

  • 100 dB, Typical PCM1742E

– THD+N:

  • 0.002%, Typical PCM1742KE

  • 0.003%, Typical PCM1742E

– Full-Scale Output: 3.1 Vp-p, Typical

• 4x/8x Oversampling Digital Filter:

  Stop-Band Attenuation: –55 dB

  Pass-Band Ripple: ±0.03 dB

• Sampling Frequency: 5 kHz to 200 kHz

• System Clock: 128 fS, 192 fS, 256 fS, 384 fS, 512 fS, 768 fS With Autodetect

• Accepts 16-, 18-, 20-, and 24-Bit Audio Data

• Data Formats: Standard, I2S, and Left-Justified

• User-Programmable Mode Controls:

  Digital Attenuation: 0 dB to –63 dB, 0.5 dB/Step

  Digital De-Emphasis

  Digital Filter Rolloff: Sharp or Slow Soft Mute

Zero Flags for Each Output

• Dual-Supply Operation: 5-V Analog, 3.3-V Digital

• 5-V Tolerant Digital Inputs

• Small SSOP-16 Package

APPLICATIONS

• AV Receivers

• DVD Movie Players

• DVD Add-On Cards for High-End PCs

• DVD Audio Players

• HDTV Receivers

• Car Audio Systems

• Other Applications Requiring 24-Bit Audio